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Universal Unit Converter
Accurate conversions using SI‑normalized bases. Works offline after first load.
Pick what you’re converting (e.g., Length, Mass, Temperature). We normalize to a base unit internally for precision.
Tip: Press / to focus amount, S to swap units.
About this category
Choose a category to see supported units and notes.
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The unit you currently have. Example: if you have 5 kilograms, “From” = Kilogram.
The unit you want to convert into. Example: to get pounds, choose “Pound (lb)”.
Accepts decimals and commas. Temperature & fuel economy use category‑specific formulas.
Result
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FAQs
Each category is normalized to an SI base (e.g., meters, kilograms, liters, pascals, joules, watts, bytes, radians).
For temperature and fuel economy, we use standard formulas (not simple multipliers). Constants follow commonly accepted
standards (e.g., 1 inch = 25.4 mm; 1 psi ≈ 6,894.757293168 Pa).
No. This simplified version does not keep history or favorites. Everything runs in your browser.